11210021220 has 48 divisors (see below), whose sum is σ = 31395772800. Its totient is φ = 2988604416.

The previous prime is 11210021219. The next prime is 11210021257. The reversal of 11210021220 is 2212001211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11210021196 and 11210021205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250081 + ... + 291479.

It is an arithmetic number, because the mean of its divisors is an integer number (654078600).

Almost surely, 2^11210021220 is an apocalyptic number.

11210021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11210021220 is an abundant number, since it is smaller than the sum of its proper divisors (20185751580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11210021220 is a wasteful number, since it uses less digits than its factorization.

11210021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45924 (or 45922 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11210021220 its reverse (2212001211), we get a palindrome (13422022431).

The spelling of 11210021220 in words is "eleven billion, two hundred ten million, twenty-one thousand, two hundred twenty".